M.A.P Audio & Customs - Custom made fiberglass 8" subwoofer enclosure for an audi a3 8v. This was hand made with mdf rings and support braces. It was then fiberglass and covered
Wicked C.A.S. > Audi > AUDI A3 Magic Box 10 / 12 / 13 SUB BOX SUBWOOFER ENCLOSURE
A3 B&O sub woofer | Audi-Sport.net
Alpine - SPC-300A3 Premium Alpine Sound System for Audi A3, S3, RS3
Trunk Subwoofer Speaker Box Sub 06-08 Audi A3 - 8P4 035 382 B | CarParts4Sale, Inc.
Audi A3 8P subwoofer w boczek Audio System M08 R08 - YouTube
3 12" NXS subs in Audi A3 | Car audio systems, Car audio installation, Car audio
For Audi A3 8PA Subwoofer Housing 20 CM 8 Inch Woofer Space-Saving Boot 4047442079405 | eBay